Overview
The ADP7182ACPZ-R7, produced by Analog Devices Inc., is a CMOS, low dropout (LDO) linear regulator. This regulator is designed to operate from a wide input voltage range of −2.7 V to −28 V and provides up to −200 mA of output current. It is particularly suited for regulating high-performance analog and mixed signal circuits operating from −27 V down to −1.2 V rails. The ADP7182 features an advanced proprietary architecture that ensures high power supply rejection ratio (PSRR) and low noise, making it ideal for applications requiring stable and reliable voltage regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | −2.7 V to −28 V | V |
| Output Current | −200 mA | mA |
| Output Voltage Range | −1.22 V to −VIN + VDO (adjustable) | V |
| Fixed Output Voltages | −1.2 V, −1.5 V, −1.8 V, −2.5 V, −3 V, −5 V | V |
| Power Supply Rejection Ratio (PSRR) | 45 dB to 66 dB (10 kHz to 1 MHz) | dB |
| Noise | 18 μV rms | μV |
| Dropout Voltage | 185 mV | mV |
| Package | 8-WFDFN Exposed Pad, CSP | |
| Pin Count | 8 | |
| Operating Junction Temperature Range | −40°C to +125°C | °C |
Key Features
- Low noise: 18 μV rms, independent of the output voltage.
- High power supply rejection ratio (PSRR): 45 dB to 66 dB across various frequencies.
- Low dropout voltage: 185 mV.
- Adjustable output voltage from −1.22 V to −VIN + VDO via an external feedback divider.
- Fixed output voltage options: −1.2 V, −1.5 V, −1.8 V, −2.5 V, −3 V, −5 V.
- Enable logic capable of interfacing with positive or negative logic levels.
- Small footprint packages: 5-lead TSOT, 6- and 8-lead LFCSP.
- High line and load transient response with a small 2.2 μF ceramic output capacitor.
Applications
The ADP7182 is ideal for regulating high-performance analog and mixed signal circuits. It is particularly useful in applications such as:
- High-performance audio and video systems.
- Medical devices requiring stable and low-noise power supplies.
- Industrial control systems and instrumentation.
- Telecommunication equipment and networking devices.
- Automotive systems where reliable and stable voltage regulation is critical.
Q & A
- What is the input voltage range of the ADP7182?
The ADP7182 operates from −2.7 V to −28 V.
- What is the maximum output current of the ADP7182?
The maximum output current is −200 mA.
- What are the fixed output voltage options available for the ADP7182?
The fixed output voltage options include −1.2 V, −1.5 V, −1.8 V, −2.5 V, −3 V, and −5 V.
- Can the output voltage of the ADP7182 be adjusted?
- What is the power supply rejection ratio (PSRR) of the ADP7182?
The PSRR ranges from 45 dB to 66 dB across various frequencies.
- What is the noise level of the ADP7182?
The noise level is 18 μV rms, independent of the output voltage.
- What package options are available for the ADP7182?
The ADP7182 is available in 5-lead TSOT, 6- and 8-lead LFCSP packages.
- What is the operating junction temperature range of the ADP7182?
The operating junction temperature range is −40°C to +125°C.
- What is the dropout voltage of the ADP7182?
The dropout voltage is 185 mV.
- Can the enable logic of the ADP7182 interface with both positive and negative logic levels?
